matplotlib Code

move all of basemap.py in here so sphinx will find docstrings.
Spruce up docstrings, adding rest formatting.

Fix latex doc build by removing some more obscure symbols that aren't
likely to be installed and adding "txfonts" to preamble.

comments in the coding guide review

added an empty matplotlibrc to users/figures

Fix compiler warnings.

Fix capitalization.

Removing debugging output

Fix silly typo in _png.cpp that broke usetex support.

Fix docutils 0.4 incompatibility.

Fix Python 2.4 incompatibility.